| 摘要 |
An anti-surging valve comprises a valve case, an upper poppet combination and a lower poppet combination, a plunger, a plunger moving unit, a first elastic member, and a second elastic member. The upper poppet combination is located inside the valve case and comprises a first fluid path in top and bottom directions. The lower poppet combination is located in a lower part of the upper poppet combination and comprises a second fluid path the top and bottom directions of the central unit. The plunger penetrates the upper poppet combination in the top and bottom directions and comprises a stepped unit in the lower part the plunger in a horizontal direction. The plunger moving unit moves upwardly and downwardly moves the plunger. The first elastic member upwardly and downwardly adds elastic force and is located between the stepped unit of the plunger and the upper poppet combination. The second elastic member upwardly and downwardly adds the elastic force and is located between the upper poppet combination and the valve case. A protrusion unit attached to the stepped unit of the plunger is formed on the upper part of the lower poppet combination and smoothly operates in response to surge pressure without decreasing the diameter of the fluid path or increasing the weight of a coil. The present invention is provided not to need a separate device for preventing the surge pressure, thereby reducing costs and the weight. |
